OxyContin is a brand name for oxycodone, a powerful prescription opioid analgesic used to manage moderate to severe pain. It works by binding to specific receptors in the brain and spinal cord, altering the perception of pain. Due to its potency and potential for addiction, it is classified as a controlled substance and is prescribed with caution. Misuse of OxyContin can lead to serious side effects, including overdose and death.